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    <title>GROOPS - GnssSimulateReceiver</title>

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            <h1>GnssSimulateReceiver</h1><p>

This program simulates observations from receivers to GNSS satellites.
These simulated observations can then be used in <a class="groops-program" href="GnssProcessing.html">GnssProcessing</a>, for example to conduct closed-loop simulations.</p><p>One or more GNSS constellations must be defined via <a class="groops-class" href="gnssTransmitterGeneratorType.html">transmitter</a>.
Receivers such as ground station networks or Low Earth Orbit (LEO) satellites can be defined via <a class="groops-class" href="gnssReceiverGeneratorType.html">receiver</a>.</p><p>If multiple receivers defined an <a class="groops-class" href="fileFormat_instrument.html">outputfileGnssReceiver</a> and <a class="groops-class" href="fileFormat_instrument.html">outputfileClock</a>
are written for each single receiver with the <a class="groops-ref" href="general.parser.html">variable</a> <code>{station}</code> being replaced by the receiver name.</p><p>A list of simulated observation types can be defined via <a class="groops-class" href="gnssType.html">observationType</a>. Noise can be added to both observations and clock errors
via <a class="groops-class" href="noiseGeneratorType.html">noiseObervation</a> and <a class="groops-class" href="noiseGeneratorType.html">noiseClockReceiver</a>, respectively. Observation noise is
interpreted as a factor that is multiplied to the accuracy derived from the accuracy pattern of the respective observation type
(see <a class="groops-class" href="fileFormat_gnssAntennaDefinition.html">inputfileAccuracyDefinition</a> in <a class="groops-class" href="gnssReceiverGeneratorType.html">receiver</a>).</p><p>The <a class="groops-class" href="gnssParametrizationType.html">parametrization</a> are used to simulate a priori models (e.g. troposphere, signal biases).
Parameter settings and outputfiles are ignored.</p><p>If the program is run on multiple processes the <a class="groops-class" href="gnssReceiverGeneratorType.html">receiver</a>s
(stations or LEO satellites) are distributed over the processes.
</p>
<table class="table table-hover">
<tr class="table-primary"><th>Name</th><th>Type</th><th>Annotation</th></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config mustset">outputfileGnssReceiver</div></div></td><td>filename</td><td>variable {station} available, simulated observations</td></tr>
<tr class=""><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional">outputfileClock</div></div></td><td>filename</td><td>variable {station} available, simulated receiver clock errors</td></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config mustset-unbounded">timeSeries</div></div></td><td><a href="timeSeriesType.html">timeSeries</a></td><td>defines observation epochs</td></tr>
<tr class=""><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional">timeMargin</div></div></td><td>double</td><td>[seconds] margin to consider two times identical</td></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config mustset-unbounded">transmitter</div></div></td><td><a href="gnssTransmitterGeneratorType.html">gnssTransmitterGenerator</a></td><td>constellation of GNSS satellites</td></tr>
<tr class=""><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config mustset-unbounded">receiver</div></div></td><td><a href="gnssReceiverGeneratorType.html">gnssReceiverGenerator</a></td><td>ground station network or LEO satellite</td></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config mustset">earthRotation</div></div></td><td><a href="earthRotationType.html">earthRotation</a></td><td>apriori earth rotation</td></tr>
<tr class=""><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional-unbounded">parametrization</div></div></td><td><a href="gnssParametrizationType.html">gnssParametrization</a></td><td>models and parameters</td></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config mustset-unbounded">observationType</div></div></td><td><a href="gnssType.html">gnssType</a></td><td>simulated observation types</td></tr>
<tr class=""><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional-unbounded">noiseObservation</div></div></td><td><a href="noiseGeneratorType.html">noiseGenerator</a></td><td>[-] noise is multiplied with type accuracy pattern of receiver</td></tr>
<tr class="table-light"><td class="m-0"><div class="h-100 config-tree depth-0"><div class="h-100 config optional-unbounded">noiseClockReceiver</div></div></td><td><a href="noiseGeneratorType.html">noiseGenerator</a></td><td>[m] noise added to the simulated receiver clock</td></tr>
</table>
This program is <a class="groops-ref" href="general.parallelization.html">parallelized</a>.

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